Improvement in cog-wheels



C. E. BROOKS,

COG-WHEEL. No. 170,049. Patented Nov. 16, 1875.

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wxmgssask' I UNITED STATES PATENT QFEIGE f CHARLES E. BROOKS, OFMARSHALL, MICHIGAN.

IMPROVEMENT IN COG-WHEELS.

Specification forming part of Letters Patent N 0. 170.0419, datedNovember 16, 1875; application filed October 12, 1875.

i .is a specification:

The subject of this invention is a metal gear wheel, the cogs of whichare provided with a covering of sole-leather or other suitable material,which has been previously pressed in a form to the exact shape of thecog, and is secured by screws, as shown in the drawing, to the ends ofthe cogs: The ends of the caps are held in grooves cast or planed acrossthe rim of the wheel.

In the perspective view of the accompanying drawing, showing a portionof the arm and rim of a cog-wheel, A represents the caps or covering,and B the cogs, planed down to the thickness of the leather caps. c care the grooves, cast or planed across the rim of the wheel, in linewith the sides of the cogs, and of sufficient depth to retain the endsof the cap in close contact with the sides of the cogs when put on andsecured by the screws.

My invention is more applicable to that class of gear-wheels used inmill machinery for driving millstones, and which I design as asubstitute for the said wooden cog-wheels now in use.

By the use of this invention any mechanic can cog up a wheel withoutdelay by simply taking off the old coverings and putting on a new set.In the case of spur gearing the coverings A can be reversed when oneside is worn out.

My invention can be used with profit on Woodencog-wheels, or on anygearing in which the noise attendant upon the use of metal gearing is tobe dispensed with.

I claim as my invention- The covering of sole-leather A. or othersuitable material for the cogs of gear-wheels, as herein described, andfor the purpose set forth.

CHARLES E. BROOKS,

